Experimental Research on Cutting Forces of Titanium Alloys of Three Kinds of Metallographic Structure in Cutting Process

College of Mechanical and Material Engineering, North China University of Technology, Beijing 100144

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    TA7 (α phase), TB6 (β phase) and TC4 (α+β phase) alloys were selected for cutting experiments, and the right-angle cutting model was designed, and the cutting speed was the only variable to analyze the cutting force changes of the three kinds of titanium alloys during the cutting process. The cutting experiment results show that the cutting force of β phase titanium alloy is much greater than that of α phase titanium alloy and α+β phase titanium alloy during the cutting process. The cutting force of the three titanium alloys increases first and then decreases with the increase of cutting speed during the cutting process, reaching the maximum when the cutting speed is 50 m/min. The sawtooth chips are collected and observed, and the formation mechanism is analyzed, and it is observed that with the increase of speed, the chips change from banding to sawtooth. Based on the cutting force data and chip morphology changes of the three kinds of titanium alloys with the change of cutting speed during the experiment, the two formation factors of adiabatic shear have an important impact on the cutting force and chip morphology in the process of cutting from low speed to high speed.

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  • Received:April 06,2022
  • Revised:June 01,2022
  • Adopted:June 06,2022
  • Online: March 04,2024
  • Published: February 29,2024